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c2fec27b5c
numam-dpdk/drivers/net/enic/enic_res.c
Hyong Youb Kim c2fec27b5c net/enic: allow to change RSS settings 
Currently, when more than 1 receive queues are configured, the driver
always enables RSS with the driver's own default hash type, key, and
RETA. The user is unable to change any of the RSS settings. Address
this by implementing the ethdev RSS API as follows.

Correctly report the RETA size, key size, and supported hash types
through rte_eth_dev_info.

During dev_configure(), initialize RSS according to the device's
mq_mode and rss_conf. Start with the default RETA, and use the default
key unless a custom key is provided.

Add the RETA and rss_conf query/set handlers to let the user change
RSS settings after the initial configuration. The hardware is able to
change hash type, key, and RETA individually. So, the handlers change
only the affected settings.

Refactor/rename several functions in order to make their intentions
clear. For example, remove all traces of RSS from
enicpmd_vlan_offload_set() as it is confusing.

Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>
2018-03-30 14:08:43 +02:00

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2008-2017 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*/
#include "enic_compat.h"
#include "rte_ethdev_driver.h"
#include "wq_enet_desc.h"
#include "rq_enet_desc.h"
#include "cq_enet_desc.h"
#include "vnic_resource.h"
#include "vnic_enet.h"
#include "vnic_dev.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#include "vnic_cq.h"
#include "vnic_intr.h"
#include "vnic_stats.h"
#include "vnic_nic.h"
#include "vnic_rss.h"
#include "enic_res.h"
#include "enic.h"
int enic_get_vnic_config(struct enic *enic)
{
struct vnic_enet_config *c = &enic->config;
int err;
err = vnic_dev_get_mac_addr(enic->vdev, enic->mac_addr);
if (err) {
dev_err(enic_get_dev(enic),
"Error getting MAC addr, %d\n", err);
return err;
}
#define GET_CONFIG(m) \
do { \
err = vnic_dev_spec(enic->vdev, \
offsetof(struct vnic_enet_config, m), \
sizeof(c->m), &c->m); \
if (err) { \
dev_err(enic_get_dev(enic), \
"Error getting %s, %d\n", #m, err); \
return err; \
} \
} while (0)
GET_CONFIG(flags);
GET_CONFIG(wq_desc_count);
GET_CONFIG(rq_desc_count);
GET_CONFIG(mtu);
GET_CONFIG(intr_timer_type);
GET_CONFIG(intr_mode);
GET_CONFIG(intr_timer_usec);
GET_CONFIG(loop_tag);
GET_CONFIG(num_arfs);
GET_CONFIG(max_pkt_size);
/* max packet size is only defined in newer VIC firmware
* and will be 0 for legacy firmware and VICs
*/
if (c->max_pkt_size > ENIC_DEFAULT_RX_MAX_PKT_SIZE)
enic->max_mtu = c->max_pkt_size - (ETHER_HDR_LEN + 4);
else
enic->max_mtu = ENIC_DEFAULT_RX_MAX_PKT_SIZE
- (ETHER_HDR_LEN + 4);
if (c->mtu == 0)
c->mtu = 1500;
enic->rte_dev->data->mtu = min_t(u16, enic->max_mtu,
max_t(u16, ENIC_MIN_MTU, c->mtu));
enic->adv_filters = vnic_dev_capable_adv_filters(enic->vdev);
dev_info(enic, "Advanced Filters %savailable\n", ((enic->adv_filters)
? "" : "not "));
err = vnic_dev_capable_filter_mode(enic->vdev, &enic->flow_filter_mode,
&enic->filter_tags);
if (err) {
dev_err(enic_get_dev(enic),
"Error getting filter modes, %d\n", err);
return err;
}
dev_info(enic, "Flow api filter mode: %s, Filter tagging %savailable\n",
((enic->flow_filter_mode == FILTER_DPDK_1) ? "DPDK" :
((enic->flow_filter_mode == FILTER_USNIC_IP) ? "USNIC" :
((enic->flow_filter_mode == FILTER_IPV4_5TUPLE) ? "5TUPLE" :
"NONE"))),
((enic->filter_tags) ? "" : "not "));
c->wq_desc_count =
min_t(u32, ENIC_MAX_WQ_DESCS,
max_t(u32, ENIC_MIN_WQ_DESCS,
c->wq_desc_count));
c->wq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */
c->rq_desc_count =
min_t(u32, ENIC_MAX_RQ_DESCS,
max_t(u32, ENIC_MIN_RQ_DESCS,
c->rq_desc_count));
c->rq_desc_count &= 0xffffffe0; /* must be aligned to groups of 32 */
c->intr_timer_usec = min_t(u32, c->intr_timer_usec,
vnic_dev_get_intr_coal_timer_max(enic->vdev));
dev_info(enic_get_dev(enic),
"vNIC MAC addr %02x:%02x:%02x:%02x:%02x:%02x "
"wq/rq %d/%d mtu %d, max mtu:%d\n",
enic->mac_addr[0], enic->mac_addr[1], enic->mac_addr[2],
enic->mac_addr[3], enic->mac_addr[4], enic->mac_addr[5],
c->wq_desc_count, c->rq_desc_count,
enic->rte_dev->data->mtu, enic->max_mtu);
dev_info(enic_get_dev(enic), "vNIC csum tx/rx %s/%s "
"rss %s intr mode %s type %s timer %d usec "
"loopback tag 0x%04x\n",
ENIC_SETTING(enic, TXCSUM) ? "yes" : "no",
ENIC_SETTING(enic, RXCSUM) ? "yes" : "no",
ENIC_SETTING(enic, RSS) ? "yes" : "no",
c->intr_mode == VENET_INTR_MODE_INTX ? "INTx" :
c->intr_mode == VENET_INTR_MODE_MSI ? "MSI" :
c->intr_mode == VENET_INTR_MODE_ANY ? "any" :
"unknown",
c->intr_timer_type == VENET_INTR_TYPE_MIN ? "min" :
c->intr_timer_type == VENET_INTR_TYPE_IDLE ? "idle" :
"unknown",
c->intr_timer_usec,
c->loop_tag);
/* RSS settings from vNIC */
enic->reta_size = ENIC_RSS_RETA_SIZE;
enic->hash_key_size = ENIC_RSS_HASH_KEY_SIZE;
enic->flow_type_rss_offloads = 0;
if (ENIC_SETTING(enic, RSSHASH_IPV4))
enic->flow_type_rss_offloads |= ETH_RSS_IPV4;
if (ENIC_SETTING(enic, RSSHASH_TCPIPV4))
enic->flow_type_rss_offloads |= ETH_RSS_NONFRAG_IPV4_TCP;
if (ENIC_SETTING(enic, RSSHASH_IPV6))
enic->flow_type_rss_offloads |= ETH_RSS_IPV6;
if (ENIC_SETTING(enic, RSSHASH_TCPIPV6))
enic->flow_type_rss_offloads |= ETH_RSS_NONFRAG_IPV6_TCP;
if (ENIC_SETTING(enic, RSSHASH_IPV6_EX))
enic->flow_type_rss_offloads |= ETH_RSS_IPV6_EX;
if (ENIC_SETTING(enic, RSSHASH_TCPIPV6_EX))
enic->flow_type_rss_offloads |= ETH_RSS_IPV6_TCP_EX;
/* Zero offloads if RSS is not enabled */
if (!ENIC_SETTING(enic, RSS))
enic->flow_type_rss_offloads = 0;
return 0;
}
int enic_add_vlan(struct enic *enic, u16 vlanid)
{
u64 a0 = vlanid, a1 = 0;
int wait = 1000;
int err;
err = vnic_dev_cmd(enic->vdev, CMD_VLAN_ADD, &a0, &a1, wait);
if (err)
dev_err(enic_get_dev(enic), "Can't add vlan id, %d\n", err);
return err;
}
int enic_del_vlan(struct enic *enic, u16 vlanid)
{
u64 a0 = vlanid, a1 = 0;
int wait = 1000;
int err;
err = vnic_dev_cmd(enic->vdev, CMD_VLAN_DEL, &a0, &a1, wait);
if (err)
dev_err(enic_get_dev(enic), "Can't delete vlan id, %d\n", err);
return err;
}
int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
u8 ig_vlan_strip_en)
{
u64 a0, a1;
u32 nic_cfg;
int wait = 1000;
vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
rss_hash_type, rss_hash_bits, rss_base_cpu,
rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
a0 = nic_cfg;
a1 = 0;
return vnic_dev_cmd(enic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
}
int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len)
{
u64 a0 = (u64)key_pa, a1 = len;
int wait = 1000;
return vnic_dev_cmd(enic->vdev, CMD_RSS_KEY, &a0, &a1, wait);
}
int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len)
{
u64 a0 = (u64)cpu_pa, a1 = len;
int wait = 1000;
return vnic_dev_cmd(enic->vdev, CMD_RSS_CPU, &a0, &a1, wait);
}
void enic_free_vnic_resources(struct enic *enic)
{
unsigned int i;
for (i = 0; i < enic->wq_count; i++)
vnic_wq_free(&enic->wq[i]);
for (i = 0; i < enic_vnic_rq_count(enic); i++)
if (enic->rq[i].in_use)
vnic_rq_free(&enic->rq[i]);
for (i = 0; i < enic->cq_count; i++)
vnic_cq_free(&enic->cq[i]);
vnic_intr_free(&enic->intr);
}
void enic_get_res_counts(struct enic *enic)
{
enic->conf_wq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_WQ);
enic->conf_rq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_RQ);
enic->conf_cq_count = vnic_dev_get_res_count(enic->vdev, RES_TYPE_CQ);
enic->conf_intr_count = vnic_dev_get_res_count(enic->vdev,
RES_TYPE_INTR_CTRL);
dev_info(enic_get_dev(enic),
"vNIC resources avail: wq %d rq %d cq %d intr %d\n",
enic->conf_wq_count, enic->conf_rq_count,
enic->conf_cq_count, enic->conf_intr_count);
}
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